Improvement in paper-bag machines



2 SheetsSheet 1.

J. P. RAYMOND.

PAPER BAG MACHINE.

- Patented May 8,1877.

N. PETERS, PHDTD-LITNOGRAFHER, WASHINGTON. O G

2Sheets-Sheet 2. J. P. RAYMOND.

PAPER BAG MACHINE. No. 190,619. Patented May 8,1877.

NJPEYERS, PIIOTO-UTIIOGRAPNER. WAQHINGTON. 0.6.

UNITED STATES 1v OFFICE.

JAMES P. RAYMOND, OF CINCINNATI, OHIO.

IMPROVEMENT IN PAPER-BAG MACHINES.

Specification forming part of Letters Patent No. 190,619, dated May 8, 1-577; application filed May 11. 1875.

To all whom it may concern:

Be it known that 1, JAMES P. RAYMOND, of Cincinnati, Hamilton county,State of Ohio, have invented an Improvement in Paper-Bag Machines, ofwhich the following is a specification:

My invention consists, in the first part, of a combination ofpeculiarly-shaped knife and roller for cutting the sheet from acontinuous roll of paper into lengths for bags; and the second part ofmy invention consists in the combination of a set of creasing-knives anda rubber-faced roller, by which a paper tube may be creased in the linesnecessary for folding the bottom of the bag, the creasing-marks servingto uniformly guide and facilitate the act of folding the bottom.

Referring to the accompanying drawings, Figure 1 is a perspective viewof a machine embracing my improvement. Fig. 2 is a cross-section of theroller carrying the creasing and cutting knives through line an ac,Fig. 1. Fig. 3 is a perspective view of the knife.

A is the frame of the machine, and B the table upon which the paper isfed. 0 0 represent two rollers, adjustably secured, as shown, inhousings, and adapted to feed the sheet or tube from the table B,thelower roller being geared to the driving-shaft D.

The toproller may be grooved, as shown, to prevent it pressing the pastefrom a freshly-pasted central seam ofa tube, and the lower roller may befaced with rubber o.

In the housings E two rollers, F G, are journaled, the upper one beingjournaled in adjustable boxes f, operated upon to secure adjustabilityby the set-screws f, and the lower roller is geared to the driving-shaftD,

so that it and the roller 0 are rotated by positive mechanism, and inthe same direction.

A fly-wheel, H, may be secured to the driving-shaft D. The roller F maybe similarly grooved to the roller 0, to avoid pressing the pasted seam,and it has fitted to it,'in the direction of its axis, a knife, I,having both its sides filed with V-shaped notches, so as to give itsouter edge,-originally thick and fiat, a. cutting-edge in a zigzag line,but in the same plane. This knife, therefore, operates not to tear thepaper, as serrated knives do, but to effect a clear cut in a zigzag lineby a shearing action, the points at the front edge of the knife firststriking through the paper, after which the oblique outtin g-edgesgradually sever it. Besides making aclean out, this knife has thisadvantage over the ordinary serrated knife, namely: that its action willnotinterrupt the continuous feeding of the paper by the roll carryingthe knife and its rubber-faced counter-roll, because the severance ismade gradually, so that the points of the serrated edge of the paperwill be firmly held in the bite of the rolls by the time the out iscompleted. The roller G, which it cuts upon, is thickly coated withrubber, into which the edge of the knife is embedded in the act ofcutting, without injury to the rubber, the rul ber serving to permit theknife to pass entirely through the paper.

The set-screws f and sliding boxesfpermit the knife to enter more orless into the rubber, as it is found to be more or less sharp.

The creasing-knives J K L M are secured to the roller F, as shown, andproject to a less extent than the knife I. They are, however, adapted,as the roller revolves, to partly bury themselves in the rubber ofroller G, for the purpose of definitely forming creases inthe paper.They are disposed as shown, so as to crease the lines necessary for theformation of the bottom uniformly of a satchel or square bottom bag.

I am aware that a creasing-roller has heretofore been used in connectionwith a counterroller provided with grooves corresponding to thecreasers. In the practical application of these rolls it was found thatthe paper subjected to their action was injured at the lines of thecreases; but the principal defect was, that for every size of bag aseparate pair of rolls had to be provided.

By the use of a rubber-faced counter-roller I overcome both objections.The creasing does not injure the paper, and the rubberfaced counter maybe used with all sizes of creaser-rolls.

I claim- 1. In combination with the rubberfaced roller G, the roller F,having a knife, I, whose cutting-edge is in a single plane, and made Intestimony of which invention I hereunto zigzag by the formation ofV-shaped notches set my hand. in the sides of the knife.

2. In combination with the roller F and JAMES P. RAYMOND. rubber-facedroller G, the creasing-knives J Witnesses: K L M, operatingsubstantially as and for the JOHN E. JONES,

purpose specified. EDGAR J. GROSS-

